Keyboard stand



FIG. 1 is a perspective view of a keyboard stand showing my new design;

FIG. 2 is a perspective view of a modified form of the keyboard stand shown in FIG. 1;

FIG. 3 is a front elevational view of FIG. 1;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and

FIG. 7 is a left side elevational view thereof. 

The ornamental design for a keyboard stand, as shown and described. 